content

Craft email content with inline CSS, alt text, and CAN-SPAM compliant footers.

16|Updated Apr 2, 2026
One-click install
npx skills add https://github.com/autosendhq/email-skills --skill content-autosendhq
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: content
Source: https://github.com/autosendhq/email-skills/tree/main/content
Command: npx skills add https://github.com/autosendhq/email-skills --skill content-autosendhq

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Best practices for crafting email content that avoids spam filters and improves readability and engagement. This skill guides you through subject lines, preheaders, HTML structure, body copy, CTAs, plain-text alternatives, image guidelines, and link rules, ensuring your messages are compliant and compelling.

Core Features & Use Cases

  • Subject line guidance and preheader optimization.
  • HTML structure and accessibility best practices including inline CSS and alt text.
  • Link hygiene, image usage, and plain-text fallback to improve deliverability.
  • Use Case: audit or draft transactional and marketing content to reduce spam signals and improve engagement metrics.

Quick Start

Write a first draft outline for an email campaign focusing on deliverability and clarity.

Frequently Asked Questions about content

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write email content that avoids spam filters?

To write email content that avoids spam filters, ensure your subject lines and body copy are clear, use proper HTML structure with inline CSS, include a plain-text alternative, and add a CAN-SPAM compliant footer with unsubscribe signals.

What email HTML structure best practices improve deliverability?

Email HTML structure best practices for deliverability include using inline CSS, ensuring accessible markup, adding alt text to images, maintaining proper link hygiene, and providing a plain-text fallback version.

Does my marketing email need a plain-text version and alt text?

Yes, both marketing and transactional emails need a plain-text version and alt text on images to ensure accessibility and improve deliverability by providing fallbacks for spam filters and email clients.

What's the best way to optimize email preheader and subject lines for spam?

The best way to optimize email preheaders and subject lines for spam is to draft clear, compelling copy that avoids aggressive spam triggers while accurately representing the email body content.

How do I make my email footer CAN-SPAM compliant?

To make your email footer CAN-SPAM compliant, include a valid physical postal address and clear unsubscribe signals so recipients can easily opt out of future marketing emails.

Can I use this to audit transactional email deliverability?

Yes, you can audit or draft both transactional and marketing email content to reduce spam signals, check link usage, verify accessible markup, and improve overall engagement metrics across platforms.